Current setup is three bedrooms, private renting. One room is our room, one room is DSD's and the spare room we both use to chill out in - read, use exercise bike etc. I love having this space but I see it as a luxury, not a necessity.
We've recently started looking at buying a house. DP wants us to go for a 4 bedroom. He sees it as when we want to have DC, they'll have the third room and then he still wants a 4th bedroom which he can call his space. I would rather buy a cheaper 3 bedroom and lose the spare room once we have DC. Him wanting a 4th bedroom pushes the prices up by quite a lot and would use practically every single penny of our savings for the deposit, meaning solicitors fees, stamp duty, moving costs etc would have to be paid for on a credit card.
I think he's being selfish and it's really putting me off wanting to buy with him if he can't wrap his head around the fact we lose space if we have DC. AIBU or is he?